The invention discloses a cutting system for a concrete plate. The cutting system comprises two cushion blocks, wherein the concrete plate with through holes is placed on the two cushion blocks; a fixing mechanism is arranged in each of the through holes in the two ends of the concrete plate; a moving mechanism is arranged on the side surface of each of the two fixing mechanisms; a support sleevepipe is arranged at the top of each of the two fixing mechanisms; a lifting rod capable of shrinking into each of the two support sleeve pipes sleeves into the support sleeve pipe; an insertion plateand a shrinking plate are installed at the tops of the two lifting rods separately; and the insertion plate is inserted into the shrinking plate. According to the cutting system disclosed by the invention, through the cooperative use of the fixing mechanisms, the moving mechanisms, a transversal moving mechanism, a front-rear moving mechanism and a cutting mechanism, the concrete plate can be cutwithout the need of holding a cutting device with a hand during cutting; and in this way, the cutting system has the advantages of reducing the labor force, increasing the working efficiency, and avoiding risks caused due to manual cutting.